An inspection positioning prostatic capsule expansion catheter includes a catheter main body. The catheter main body is internally provided with a catheterization cavity, a rinse cavity, a front bag cavity, and a rear bag cavity. The four cavities are each provided with a front-end opening. At the rear of the front-end openings of the catheterization cavity and the rinse cavity is the front bag cavity. At the rear of the front bag cavity is the rear bag cavity arranged in parallel. The catheter main body at the tail of the rear bag cavity is provided with a miniature visual probe. The miniature visual probe is mounted on a semi-circular protrusion at the tail of the rear bag cavity.